Nut lock for shears and the like



C J. DALLEY NUT LOCI-I FOR SHEARS AND THE LIKE Filed June 24, 1956 ENVENTOR I M BY Patented Feb. 15, 1938 I 2,108,654

2,108,654 NUT LOOK FOR SHEARS AND THE LIKE Charles J. Dalley, Maplewood, N. 3., assignor tofi g 3 m 113 W. H. Compton Shear Company, Newark,

Application June 24, 1936, Serial No. sepia 1 Glaim. (Cl. 151-38) This invention relates to an improved means around the bolt. The nut is then placed on the for locking a nut on a bolt against rotation under bolt and screwed down. The circular part I6, normal operation. The device is adapted for which is slightly larger in diameter than the dinumerous applications but is particularly adapted ameter of the inside of the loop 28 engages and for holding the nut on the pivotal screw of hinged spreads the loop. This is easily done in the case element, such as scissors and shears. of round Wire as the first contact of the part IS The invention is illustrated as applied to the with the wire loop is on the rounded part of the pivotal screw on a pair of scissors and in the wire and acts as acam in spreading the loop. As accompanying drawing Figure l is a section of the nut is screwed down the tension by the loop the contacting parts of two pivoted blades with increases and the function acts to hold the nut the bolt shown in elevation. Figure 2 is a bottom against rotatable movement relative to the bolt View of nut and the clip that locks the nut, the and relative to the blade l0. By this device the bolt being shown in section. Figure 3 is a top tension established on a pair of shears is easily view of a modified form of lock with the nut in regulated and such regulation is maintained. section. Figure 4 is a longitudinal central sec- In Figures 3 and 4 I show a modified form of tion through Figure 3. nut lock. In these views the bolt and nut are In the drawing I show a blade Ill and a blade the same as in Figures 1 and 2 but I provide a H pivotally held together by a bolt I2, the bolt clip with a loop 22 which encircles the nut l5 having a fiat side l3 and the hole in one blade, and has two DrOjeOtiIlg arms 23 v arm being such as the blade ill, having a fiat side M to bent to form a stud 24. The studs are seated in cause the blade and bolt to swing together. the blade it and while separate holes for the The nut I5 is screwed on to the threaded end studs may be provided, I prefer to provide a of the bolt and has a circular part E5. The nut Sin recess The ends of s 23 e 1101- shown has a head I! extending beyond the circua y apart When releasfid d are Squeezed lar part and having an angular edge for receivgether t p ce t e in t e ecess 5. thus caus- 25 a ing a wrench although this head can be dispensed g' a p s and adequate friCtiOnal ntact with. The blade I0 is provided with a recess or with the nut. hole I8. I claim:

A wire clip is used for locking the nut i ad- In a shears, the combination of a blade receivjusted position. The clip consists of a single ing a bolt, a bolt, a nut on the bolt, said nut piece of wire l9 formed at one end into a loop 20 having a circular part on its exterior, and a wire and at the other end into a stud 2i. The stud 2! clip having a loop on one end, said loop having fits into the recess l8 and the loop 20 encircles a normal inside diameter slight y less a e the circular part of the nut to hold it in adjusted diameter of the circular part of the nut,'the blade r positions. The circular part 16 may be provided having a recess in it, the wire having its other 0 with a rough exterior face or made irregular in end formed into astud to enter the recess and. act

other ways although a circular portion is 'preto hold the clip against turning when the nut is ferred because of easy manufacture. screwed on the bolt and the circular part of the When the device is to be used the bolt and nut spreads the loop into gripping relation with blades are assembled. The clip is then placed the nut. 40

with the stud 2| in the recess l8 and the loop 20 CHARLES J. DALLEY. 

